US8347773B2 - Thermal insulation jacket for a gun barrel - Google Patents
Thermal insulation jacket for a gun barrel Download PDFInfo
- Publication number
- US8347773B2 US8347773B2 US12/290,808 US29080808A US8347773B2 US 8347773 B2 US8347773 B2 US 8347773B2 US 29080808 A US29080808 A US 29080808A US 8347773 B2 US8347773 B2 US 8347773B2
- Authority
- US
- United States
- Prior art keywords
- gun barrel
- thermal insulation
- jacket
- metal jacket
- insulation jacket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
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Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
- F41A21/44—Insulation jackets; Protective jackets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A13/00—Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems
- F41A13/12—Systems for cooling the outer surface of the barrel
Definitions
- the invention concerns a thermal insulation jacket for a gun barrel, especially a cannon barrel, where the thermal insulation jacket consists of a metal jacket that surrounds the gun barrel.
- the gun barrel can be provided with a thermal insulation jacket, which consists basically of a metal jacket that surrounds the gun barrel with a slight amount of separation from it.
- the static layer of air between the barrel and the metal jacket serves as a heat insulator.
- the object of the present invention is to provide a thermal insulation jacket for gun barrels, with which uneven heating of the surface of the gun barrel within the thermal insulation jacket can be avoided in a simple and economical way.
- the invention is based essentially on the idea of providing an additional area that is especially effective at reflecting thermal radiation on the inner surface of the metal jacket that lies opposite the underside of the gun barrel, so that when the gun barrel heats, the temperature differences between the upper side and the underside of the gun barrel are at least partially compensated.
- a reflective film that is a good reflector of infrared light is adhesively attached to the metal jacket on the inner surface of the metal jacket that lies opposite the underside of the gun barrel.
- the film preferably has a reflectivity in the IR range (blackbody at about 293 K) of ⁇ 80%.
- the film-coated region of the barrel's thermal insulation jacket depends on various boundary conditions. It is especially advantageous or sufficient if the entire lower half of the thermal insulation jacket is covered with the film.
- the reflective films are plastic-coated aluminum films. Films of this type not only have good reflective properties in the infrared range but also good adhesive properties and processing properties as well as properties that enable them to withstand environmental influences. PVC coatings have proven effective. However, it is also possible to use polyethylene or polypropylene coatings, which have low absorption in the IR range.
- Gold and aluminum are favored as preferred materials for the reflective film, but other metals are also possible.
- FIG. 1 shows a longitudinal section of a portion of a cannon barrel with a thermal insulation jacket in accordance with the invention.
- FIG. 2 shows a cross section through the arrangement illustrated in FIG. 1 along section line II-II in FIG. 1 .
- a large-caliber cannon barrel 1 of a tank is surrounded by a thermal insulation jacket 2 in a way that in itself is already well known.
- the inventive thermal insulation jacket 2 includes a metal jacket 3 (e.g., of aluminum) and a reflective film 4 that is a good reflector of thermal radiation.
- the reflective film 4 is a plastic-coated aluminum film, which is applied only on the inner surface 6 of the metal jacket 3 that faces the underside 5 of the cannon barrel 1 and is adhesively bonded with the metal jacket 3 .
- the cannon barrel 1 If the cannon barrel 1 is now used as intended, it starts to heat according to the rate of fire.
- the thermal radiation (IR radiation) given off as it heats is partially reflected by the thermal insulation jacket 2 and returns to the outer surface of the cannon barrel 1 . Since more thermal radiation is reflected by the reflective film 4 than by the remaining surface of the metal jacket 3 , the lesser heating of the underside 5 of the cannon barrel 1 due to air convection is compensated.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Toys (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Thermal Insulation (AREA)
Abstract
Description
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007053949A DE102007053949A1 (en) | 2007-11-09 | 2007-11-09 | Heat protection cover for a weapon barrel |
DE102007053949 | 2007-11-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20110100204A1 US20110100204A1 (en) | 2011-05-05 |
US8347773B2 true US8347773B2 (en) | 2013-01-08 |
Family
ID=40303463
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/290,808 Active 2029-09-12 US8347773B2 (en) | 2007-11-09 | 2008-11-04 | Thermal insulation jacket for a gun barrel |
Country Status (4)
Country | Link |
---|---|
US (1) | US8347773B2 (en) |
EP (1) | EP2058622B1 (en) |
DE (1) | DE102007053949A1 (en) |
IL (1) | IL195153A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD767072S1 (en) | 2015-01-28 | 2016-09-20 | Jamak Fabrication-Tex, Llc | Firearm suppressor cover |
USD767073S1 (en) | 2015-01-28 | 2016-09-20 | Jamak Fabrication-Tex, Llc | Firearm suppressor cover |
US20160290761A1 (en) * | 2015-04-02 | 2016-10-06 | Lancer Systems L.P. | Firearm handguard having heat-reducing features |
USD769395S1 (en) | 2015-01-28 | 2016-10-18 | Jamak Fabrication-Tex, Llc | Firearm suppressor cover |
USD778387S1 (en) | 2015-07-31 | 2017-02-07 | Jamak Fabrication-Tex, Llc | Firearm suppressor cover |
USD778386S1 (en) | 2015-07-31 | 2017-02-07 | Jamak Fabrication-Tex, Llc | Firearm suppressor cover |
USD779618S1 (en) | 2015-07-31 | 2017-02-21 | Jamak Fabrication-Tex, Llc | Firearm suppressor cover |
USD788873S1 (en) | 2016-01-18 | 2017-06-06 | Jamak Fabrication-Tex Llc | Firearm suppressor sleeve |
USD833565S1 (en) * | 2017-12-27 | 2018-11-13 | Magpul Industries Corp. | Suppressor cover |
US20190271520A1 (en) * | 2015-12-01 | 2019-09-05 | Magpul Industries Corp. | Suppressor cover assembly and method |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9435600B2 (en) * | 2013-10-15 | 2016-09-06 | Oss Suppressors Llc | Thermal mirage reduction accessory for firearms |
US8245618B2 (en) * | 2009-12-23 | 2012-08-21 | German Sport Guns Gmbh | Barrel jacket for a firearm |
US8397615B2 (en) * | 2010-01-16 | 2013-03-19 | Dale Avery Poling | Thermally-insulating cover for firearm sound suppressor |
US9086253B2 (en) * | 2012-08-30 | 2015-07-21 | Tyco Electronics Corporation | Powered rail system for a weapon |
WO2014087401A1 (en) * | 2012-12-09 | 2014-06-12 | D.G.L. Us Ltd. | Thermal protecting shroud |
US10024619B2 (en) * | 2014-09-16 | 2018-07-17 | Gian Almazan | Temperature reduction protective wrap |
US10365061B1 (en) * | 2016-12-29 | 2019-07-30 | Aaron E. Painter | Firearm barrel with non-metal outer sleeve |
US10809032B1 (en) * | 2017-11-16 | 2020-10-20 | Lockheed Martin Corporation | Lightweight, durable, high-temperature sustaining sound suppressor device for automatic-fire small arms |
US11022396B2 (en) * | 2019-08-18 | 2021-06-01 | Superior Harmonics LLC | Rifle barrel vibration dampener and method of use |
RU2739263C1 (en) * | 2020-02-10 | 2020-12-22 | Федеральное государственное казенное военное образовательное учреждение высшего образования "Михайловская военная артиллерийская академия" Министерства обороны Российской Федерации | Method of self-propelled artillery-type weapon preparation for firing |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2674822A (en) * | 1951-05-03 | 1954-04-13 | Rene R Studler | Forearm and handguard protector |
US2965994A (en) * | 1957-05-20 | 1960-12-27 | George C Sullivan | Gun forearm |
US3367054A (en) * | 1965-02-19 | 1968-02-06 | Rheinmetall Gmbh | Hand guard for rifles |
EP0033770A2 (en) | 1980-02-12 | 1981-08-19 | Rheinmetall GmbH | Protection cover for a gun barrel |
US4663875A (en) * | 1985-12-30 | 1987-05-12 | Colt Industries Inc. | Rifle handguard assembly having outer shell with outer and inner liners |
US4762048A (en) | 1985-10-11 | 1988-08-09 | Fuji Electric Co., Ltd. | Apparatus for uniforming heat of gun barrel |
US5062346A (en) * | 1988-05-25 | 1991-11-05 | Dansk Industri Syndikat A/S | Heat protective covering for a pipe and a rod-shaped article, especially for gun barrels |
DE4400512A1 (en) | 1993-01-13 | 1994-07-14 | Secr Defence Brit | Rigid insulating sleeve for a gun barrel |
DE19904417A1 (en) | 1999-02-04 | 2000-08-17 | Rheinmetall W & M Gmbh | Gun barrel comprises inner bore arranged eccentrically inside protective sleeve which, 5with intermediate layers between the two, produces unsymmetrical thermal conductivity and compensates for uneven temperature increases when firing. |
US6701742B2 (en) * | 1999-10-08 | 2004-03-09 | BSH Bosch und Siemens Hausgeräte GmbH | Heat exchanger, such as evaporator, condenser, or the like |
WO2007017226A1 (en) | 2005-08-11 | 2007-02-15 | Heckler & Koch Gmbh | Weapon and cooling system for a weapon |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1918422A1 (en) | 1969-04-11 | 1970-10-15 | Wegmann & Co | Heat protection cover for cannon |
-
2007
- 2007-11-09 DE DE102007053949A patent/DE102007053949A1/en not_active Withdrawn
-
2008
- 2008-10-10 EP EP08017766.0A patent/EP2058622B1/en active Active
- 2008-11-04 US US12/290,808 patent/US8347773B2/en active Active
- 2008-11-06 IL IL195153A patent/IL195153A/en active IP Right Grant
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2674822A (en) * | 1951-05-03 | 1954-04-13 | Rene R Studler | Forearm and handguard protector |
US2965994A (en) * | 1957-05-20 | 1960-12-27 | George C Sullivan | Gun forearm |
US3367054A (en) * | 1965-02-19 | 1968-02-06 | Rheinmetall Gmbh | Hand guard for rifles |
EP0033770A2 (en) | 1980-02-12 | 1981-08-19 | Rheinmetall GmbH | Protection cover for a gun barrel |
US4424734A (en) | 1980-02-12 | 1984-01-10 | Heinmetall Gmbh | Protecting cover for a gun barrel |
US4762048A (en) | 1985-10-11 | 1988-08-09 | Fuji Electric Co., Ltd. | Apparatus for uniforming heat of gun barrel |
US4663875A (en) * | 1985-12-30 | 1987-05-12 | Colt Industries Inc. | Rifle handguard assembly having outer shell with outer and inner liners |
US5062346A (en) * | 1988-05-25 | 1991-11-05 | Dansk Industri Syndikat A/S | Heat protective covering for a pipe and a rod-shaped article, especially for gun barrels |
DE4400512A1 (en) | 1993-01-13 | 1994-07-14 | Secr Defence Brit | Rigid insulating sleeve for a gun barrel |
US5400691A (en) | 1993-01-13 | 1995-03-28 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Rigid thermal sleeve for a gun barrel |
DE19904417A1 (en) | 1999-02-04 | 2000-08-17 | Rheinmetall W & M Gmbh | Gun barrel comprises inner bore arranged eccentrically inside protective sleeve which, 5with intermediate layers between the two, produces unsymmetrical thermal conductivity and compensates for uneven temperature increases when firing. |
US6314857B1 (en) * | 1999-02-04 | 2001-11-13 | Rheinmetall W & M Gmbh | Weapon barrel |
US6701742B2 (en) * | 1999-10-08 | 2004-03-09 | BSH Bosch und Siemens Hausgeräte GmbH | Heat exchanger, such as evaporator, condenser, or the like |
WO2007017226A1 (en) | 2005-08-11 | 2007-02-15 | Heckler & Koch Gmbh | Weapon and cooling system for a weapon |
CA2616472A1 (en) | 2005-08-11 | 2007-02-15 | Heckler & Koch Gmbh | Weapon and cooling system for a weapon |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD767072S1 (en) | 2015-01-28 | 2016-09-20 | Jamak Fabrication-Tex, Llc | Firearm suppressor cover |
USD767073S1 (en) | 2015-01-28 | 2016-09-20 | Jamak Fabrication-Tex, Llc | Firearm suppressor cover |
USD769395S1 (en) | 2015-01-28 | 2016-10-18 | Jamak Fabrication-Tex, Llc | Firearm suppressor cover |
US20160290761A1 (en) * | 2015-04-02 | 2016-10-06 | Lancer Systems L.P. | Firearm handguard having heat-reducing features |
US9677845B2 (en) * | 2015-04-02 | 2017-06-13 | Lancer Systems L.P. | Firearm handguard having heat-reducing features |
USD778387S1 (en) | 2015-07-31 | 2017-02-07 | Jamak Fabrication-Tex, Llc | Firearm suppressor cover |
USD778386S1 (en) | 2015-07-31 | 2017-02-07 | Jamak Fabrication-Tex, Llc | Firearm suppressor cover |
USD779618S1 (en) | 2015-07-31 | 2017-02-21 | Jamak Fabrication-Tex, Llc | Firearm suppressor cover |
US20190271520A1 (en) * | 2015-12-01 | 2019-09-05 | Magpul Industries Corp. | Suppressor cover assembly and method |
USD788873S1 (en) | 2016-01-18 | 2017-06-06 | Jamak Fabrication-Tex Llc | Firearm suppressor sleeve |
USD855137S1 (en) | 2016-01-18 | 2019-07-30 | Jamak Fabrication—Tex LLC | Firearm suppressor sleeve |
USD833565S1 (en) * | 2017-12-27 | 2018-11-13 | Magpul Industries Corp. | Suppressor cover |
Also Published As
Publication number | Publication date |
---|---|
EP2058622A3 (en) | 2012-03-07 |
EP2058622A2 (en) | 2009-05-13 |
US20110100204A1 (en) | 2011-05-05 |
DE102007053949A1 (en) | 2009-05-14 |
IL195153A (en) | 2013-12-31 |
EP2058622B1 (en) | 2013-05-15 |
IL195153A0 (en) | 2009-08-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: RHEINMETALL WAFFE MUNITION GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHLENKERT, GERT;BOHNSACK, ECKEHARD;TEKIN, ALEXANDER;REEL/FRAME:021855/0472 Effective date: 20081029 |
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FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 8 |